Index: chrome/browser/ui/zoom/zoom_event_manager.cc |
diff --git a/chrome/browser/ui/zoom/zoom_event_manager.cc b/chrome/browser/ui/zoom/zoom_event_manager.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0ceffb73bedb697c215ec36af11339efce6f39f3 |
--- /dev/null |
+++ b/chrome/browser/ui/zoom/zoom_event_manager.cc |
@@ -0,0 +1,37 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "chrome/browser/ui/zoom/zoom_event_manager.h" |
+ |
+#include "base/bind.h" |
+#include "content/public/browser/browser_context.h" |
+ |
+static const char* kBrowserZoomEventManager = "browser_zoom_event_manager"; |
Dan Beam
2014/06/26 03:40:03
nit: namespace { ... }, also char* -> char[] for l
wjmaclean
2014/06/26 15:30:31
Done.
|
+ |
+ZoomEventManager* ZoomEventManager::GetForBrowserContext( |
+ content::BrowserContext* context) { |
+ ZoomEventManager* manager = static_cast<ZoomEventManager*>( |
+ context->GetUserData(kBrowserZoomEventManager)); |
+ if (!manager) { |
Dan Beam
2014/06/26 03:40:03
nit:
if (!context->GetUserData(kBrowserZoomEventM
wjmaclean
2014/06/26 15:30:31
Done.
|
+ manager = new ZoomEventManager(); |
+ context->SetUserData(kBrowserZoomEventManager, manager); |
+ } |
+ return manager; |
+} |
+ |
+ZoomEventManager::ZoomEventManager() { |
+} |
+ |
+ZoomEventManager::~ZoomEventManager() {} |
+ |
+void ZoomEventManager::OnZoomLevelChanged( |
+ const content::HostZoomMap::ZoomLevelChange& change) { |
+ zoom_level_changed_callbacks_.Notify(change); |
+} |
+ |
+scoped_ptr<content::HostZoomMap::Subscription> |
+ZoomEventManager::AddZoomLevelChangedCallback( |
+ const content::HostZoomMap::ZoomLevelChangedCallback& callback) { |
+ return zoom_level_changed_callbacks_.Add(callback); |
+} |